// Created by deepin on 2020/11/11.
#include <iostream>
#include <cmath>
#include "coordin.h"
using namespace std;
polar rect_to_polar(rect xypos)
{
  polar answer;
  answer.distance = sqrt(
     xypos.x * xypos.x
           +
        xypos.y * xypos.y
  );
  answer.angle = atan2(xypos.y,xypos.x);
  return answer;
}
void show_polar(polar dapos)
{
  const double Rad_to_deg = 57.29577951;
  cout << "distance = " <<dapos.distance;
  cout << ", angle = " << dapos.angle * Rad_to_deg;
  cout << " degrees\n";
}